1,720,956 research outputs found
In vitro starch digestibility and ex-vivo glucose response studies of Vietnamese starchy foods using Caco-2 cells and 14C radioisotope
Get PDFA systematic scientific investigation of starch digestibility and glucose response of the most commonly consumed Vietnamese rice varieties, rice and wheat products have not been studied yet. Starchy staples were investigated for their physicochemical properties, in vitro starch digestibility and ex-vivo glucose response using a Caco-2 cell model. The potential of using black rice as an alternative to white rice was also studied. Eleven rice starches were analysed for amylose content, swelling power, gelatinisation (DSC) and pasting (RVA) properties, degree of crystallisation (XRD), and short range order structure (FTIR). Raw and cooked rice (white and brown) were analysed for their in vitro starch digestibilities to explore the relationship with physicochemical properties. Cooked rice grains and twelve rice and wheat products were studied for their RDS, SDS and RS. Anthocyanins from black rice were identified, quantified and purified using HPLC-PDA/mass spectrometry before being subjected to measuring α-glucosidase, glucose uptake and transport. Digestibility of rice starch with amylose contents ranging from 0.2-28.4% was independent of physicochemical properties when cooked in limited water. Vietnamese cooked white rice was high in RDS (82.5%) but low in SDS (10.5) and RS (7%). Cooked brown rice was of slightly lower starch digestibility, though statistically significant (p < 0.05), compared to white rice. A typical rice-based meal with a high proportion of carbohydrate (67.5%) resulted in 20% higher starch digestibility compared to a 55% carbohydrate diet. Rice and wheat products had significantly lower starch digestibility (p < 0.001) compared to white rice. Rice and wheat product hydrolysates had significantly lower (p < 0.001) glucose response and GI (67.2 vs. 82.3) compared to white rice. Black rice contained anthocyanins (191 mg/100g). Cya-3-Glu and Pn-3-Glu were major anthocyanins which significantly inhibited α-glucosidase (32% maltase, 57% sucrase, at a concentration of 1000 µg/mL), glucose uptake (IC50 = 2300 and 2328 µM) and transport (IC50 = 2639 and 2413 µM). Anthocyanin mixture (93% Cya-3-Glu, 7% Pn-3-Glu), showed high sucrase inhibition (66% at a concentration of 1000 µg/mL), glucose uptake (IC50 = 1662 µM) and glucose transport (IC50= 1781 µM) measured by using Caco-2 cell models and ᴅ-[U-14C]glucose as a tracer
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Application of GIS-Base GALDIT for vulnerability assessment to saltwater intrusion of Holocene coastal aquifer: a case of Quang Nam - Da Nang city, Vietnam
No full textDispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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